We've recently add a group of sections to the Open Liberty docs pages on security Liberty for production environments. These materials can be used to ensure you have hardened your configuration and applications for production. It is broken into 3 primary sections:

Here's the link:  https://openliberty.io/docs/21.0.0.4/security-hardening.html

For questions regarding this information I can be contacted at jmulvey@us.ibm.com.